Hauptseminar Geometrie

RTG Kolloquium "Four-folds and fold-forms" Prof. Dr. Ana Cannas da Silva, ETH Zürich Abstract: Despite spectacular progress in the past 4 decades, the panorama of (smooth) 4-dimensional manifolds is still quite untamed. Often, additional geometric structures on these manifolds have been used to construct key examples. We will review some of this context and explain the existence, on any orientable 4-manifold, of a so-called folded symplectic form: that is a closed 2-form with mild singularities along a separating hypersurface.This result may be viewed as a version for 4-manifolds of the fact that any orientable 2-manifold admits an area form. Dienstag, den 04. Februar 2020 um 13.30 Uhr, Konferenzraum 5.104, 5.OG, INF 205

Dienstag, den 4. Februar 2020 um 13:30 Uhr, in INF 205, 5.104 Dienstag, den 4. Februar 2020 at 13:30, in INF 205, 5.104

Der Vortrag folgt der Einladung von The lecture takes place at invitation by Prof. Dr. Anna Wienhard, Prof. Peter Albers